Are Stannern-group eucrites products of partial melt contamination? [electronic resource] : constraining the petrogenesis of the H.E.D. parent body through experimental petrology /Show full item record
|Title||Are Stannern-group eucrites products of partial melt contamination? [electronic resource] : constraining the petrogenesis of the H.E.D. parent body through experimental petrology /|
|Author||Crossley, Samuel Dean|
|Abstract||Partial melting experiments were conducted on the eucrite NWA 8562 to assess the validity of partial melt assimilation models for Stannern-group eucrite petrogenesis. NWA 8562 petrography and major/minor element geochemistry were analyzed to assure that the meteorite met experimental parameters. Four sets of experiments were run at 1050, 1100, 1150, and 1200°C. Experimental compositions were analyzed and factored into calculations that model the mixing of melt fractions into Main-group eucritic magmas. We have shown that while partial melt mixing models for Stannern-group eucites can satisfy trace element constraints at 5% partial melting and 10-15%-contaminant mixtures, the model fails to account for extreme Fe-enrichment in melts, which yield compositions that are outside the range of eucrites. Previously modeled pyroxene compositions seem to be erroneous and require correction. Further research into accessory phase melt-contribution is required, and should be incorporated into the model.|
|Description||Title from thesis title page (viewed Mar. 8, 2017).
Thesis--Texas Christian University, 2016.
Department of Geology, Energy, and the Environment; advisor, Rhiannon Mayne.
Includes bibliographical references.
Text (electronic thesis) in PDF.
Files in this item
This item appears in the following Collection(s)
- Theses and Dissertations